plugins: lsps: move primitives into proto module

diff --git a/plugins/lsps-plugin/src/client.rs b/plugins/lsps-plugin/src/client.rs
index a466560f..88189c64 100644
--- a/plugins/lsps-plugin/src/client.rs
+++ b/plugins/lsps-plugin/src/client.rs
@@ -16,6 +16,7 @@ use cln_lsps::lsps2::model::{
     compute_opening_fee, Lsps2BuyRequest, Lsps2BuyResponse, Lsps2GetInfoRequest,
     Lsps2GetInfoResponse, OpeningFeeParams,
 };
+use cln_lsps::proto::primitives::Msat;
 use cln_lsps::util;
 use cln_lsps::LSP_FEATURE_BIT;
 use cln_plugin::options;
diff --git a/plugins/lsps-plugin/src/lib.rs b/plugins/lsps-plugin/src/lib.rs
index f14b96c7..d4ef4ae7 100644
--- a/plugins/lsps-plugin/src/lib.rs
+++ b/plugins/lsps-plugin/src/lib.rs
@@ -1,6 +1,7 @@
 pub mod jsonrpc;
 pub mod lsps0;
 pub mod lsps2;
+pub mod proto;
 pub mod util;
 
 pub const LSP_FEATURE_BIT: usize = 729;
diff --git a/plugins/lsps-plugin/src/lsps0/mod.rs b/plugins/lsps-plugin/src/lsps0/mod.rs
index f32b0a55..d4959a32 100644
--- a/plugins/lsps-plugin/src/lsps0/mod.rs
+++ b/plugins/lsps-plugin/src/lsps0/mod.rs
@@ -1,4 +1,3 @@
 pub mod handler;
 pub mod model;
-pub mod primitives;
 pub mod transport;
diff --git a/plugins/lsps-plugin/src/lsps0/primitives.rs b/plugins/lsps-plugin/src/lsps0/primitives.rs
deleted file mode 100644
index 3b2ff52d..00000000
--- a/plugins/lsps-plugin/src/lsps0/primitives.rs
+++ /dev/null
@@ -1,199 +0,0 @@
-use core::fmt;
-use serde::{
-    de::{self},
-    Deserialize, Deserializer, Serialize, Serializer,
-};
-
-const MSAT_PER_SAT: u64 = 1_000;
-
-/// Represents a monetary amount as defined in LSPS0.msat. Is converted to a
-/// `String` in json messages with a suffix `_msat` or `_sat` and internally
-/// represented as Millisatoshi `u64`.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
-pub struct Msat(pub u64);
-
-impl Msat {
-    /// Constructs a new `Msat` struct from a `u64` msat value.
-    pub fn from_msat(msat: u64) -> Self {
-        Msat(msat)
-    }
-
-    /// Construct a new `Msat` struct from a `u64` sat value.
-    pub fn from_sat(sat: u64) -> Self {
-        Msat(sat * MSAT_PER_SAT)
-    }
-
-    /// Returns the sat amount of the field. Is a floored integer division e.g
-    /// 100678 becomes 100.
-    pub fn to_sats_floor(&self) -> u64 {
-        self.0 / 1000
-    }
-
-    /// Returns the msat value as `u64`. Is the inner value of `Msat`.
-    pub fn msat(&self) -> u64 {
-        self.0
-    }
-}
-
-impl core::fmt::Display for Msat {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}_msat", self.0)
-    }
-}
-
-impl Serialize for Msat {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        serializer.serialize_str(&self.0.to_string())
-    }
-}
-
-impl<'de> Deserialize<'de> for Msat {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        struct MsatVisitor;
-
-        impl<'de> de::Visitor<'de> for MsatVisitor {
-            type Value = Msat;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("a string representing a number")
-            }
-
-            fn visit_str<E>(self, value: &str) -> Result<Msat, E>
-            where
-                E: de::Error,
-            {
-                value
-                    .parse::<u64>()
-                    .map(Msat::from_msat)
-                    .map_err(|_| E::custom(format!("Invalid number string: {}", value)))
-            }
-
-            // Also handle if JSON mistakenly has a number instead of string
-            fn visit_u64<E>(self, value: u64) -> Result<Msat, E>
-            where
-                E: de::Error,
-            {
-                Ok(Msat::from_msat(value))
-            }
-
-            fn visit_i64<E>(self, value: i64) -> Result<Msat, E>
-            where
-                E: de::Error,
-            {
-                if value < 0 {
-                    Err(E::custom("Msat cannot be negative"))
-                } else {
-                    Ok(Msat::from_msat(value as u64))
-                }
-            }
-        }
-
-        deserializer.deserialize_any(MsatVisitor)
-    }
-}
-
-/// Represents parts-per-million as defined in LSPS0.ppm. Gets it's own type
-/// from the rationals: "This is its own type so that fractions can be expressed
-/// using this type, instead of as a floating-point type which might lose
-/// accuracy when serialized into text.". Having it as a separate type also
-/// provides more clarity.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
-#[serde(transparent)] // Key attribute! Serialize/Deserialize as the inner u32
-pub struct Ppm(pub u32); // u32 is sufficient as 1,000,000 fits easily
-
-impl Ppm {
-    /// Constructs a new `Ppm` from a u32.
-    pub const fn from_ppm(value: u32) -> Self {
-        Ppm(value)
-    }
-
-    /// Applies the proportion to a base amount (e.g., in msats).
-    pub fn apply_to(&self, base_msat: u64) -> u64 {
-        // Careful about integer division order and potential overflow
-        (base_msat as u128 * self.0 as u128 / 1_000_000) as u64
-    }
-
-    /// Returns the ppm.
-    pub fn ppm(&self) -> u32 {
-        self.0
-    }
-}
-
-impl core::fmt::Display for Ppm {
-    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
-        write!(f, "{}ppm", self.0)
-    }
-}
-
-/// Represents a short channel id as defined in LSPS0.scid. Matches with the
-/// implementation in cln_rpc.
-pub type ShortChannelId = cln_rpc::primitives::ShortChannelId;
-
-/// Represents a datetime as defined in LSPS0.datetime. Uses ISO8601 in UTC
-/// timezone.
-pub type DateTime = chrono::DateTime<chrono::Utc>;
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use serde_json;
-
-    #[derive(Debug, Serialize, Deserialize)]
-    struct TestMessage {
-        amount: Msat,
-    }
-
-    /// Test serialization of a struct containing Msat.
-    #[test]
-    fn test_msat_serialization() {
-        let msg = TestMessage {
-            amount: Msat(12345000),
-        };
-
-        let expected_amount_json = r#""amount":"12345000""#;
-
-        // Assert that the field gets serialized as string.
-        let json_string = serde_json::to_string(&msg).expect("Serialization failed");
-        assert!(
-            json_string.contains(expected_amount_json),
-            "Serialized JSON should contain '{}'",
-            expected_amount_json
-        );
-
-        // Parse back to generic json value and check field.
-        let json_value: serde_json::Value =
-            serde_json::from_str(&json_string).expect("Failed to parse JSON back");
-        assert_eq!(
-            json_value
-                .get("amount")
-                .expect("JSON should have 'amount' field"),
-            &serde_json::Value::String("12345000".to_string()),
-            "JSON 'amount' field should have the correct string value"
-        );
-    }
-
-    /// Test deserialization into a struct containing Msat.
-    #[test]
-    fn test_msat_deserialization_and_errors() {
-        // Case 1: Input string uses "_msat" suffix
-        let json_ok = r#"{"amount":"987654321"}"#;
-        let expected_value_msat = Msat(987654321);
-        let message1: TestMessage =
-            serde_json::from_str(json_ok).expect("Deserialization from string failed");
-        assert_eq!(message1.amount, expected_value_msat);
-
-        // Case 2: Non-numeric Value before suffix
-        let json_non_numeric = r#"{"amount":"abc"}"#;
-        let result_non_numeric = serde_json::from_str::<TestMessage>(json_non_numeric);
-        assert!(
-            result_non_numeric.is_err(),
-            "Deserialization should fail for non-numeric value"
-        );
-    }
-}
diff --git a/plugins/lsps-plugin/src/lsps2/handler.rs b/plugins/lsps-plugin/src/lsps2/handler.rs
index 4e86943f..1eb323fe 100644
--- a/plugins/lsps-plugin/src/lsps2/handler.rs
+++ b/plugins/lsps-plugin/src/lsps2/handler.rs
@@ -1,6 +1,5 @@
 use crate::{
     jsonrpc::{server::RequestHandler, JsonRpcResponse as _, RequestObject, RpcError},
-    lsps0::primitives::{Msat, ShortChannelId},
     lsps2::{
         cln::{HtlcAcceptedRequest, HtlcAcceptedResponse, TLV_FORWARD_AMT},
         model::{
@@ -13,6 +12,7 @@ use crate::{
         },
         DS_MAIN_KEY, DS_SUB_KEY,
     },
+    proto::primitives::{Msat, ShortChannelId},
     util::unwrap_payload_with_peer_id,
 };
 use anyhow::{Context, Result as AnyResult};
@@ -679,11 +679,11 @@ mod tests {
     use super::*;
     use crate::{
         jsonrpc::{JsonRpcRequest, ResponseObject},
-        lsps0::primitives::{Msat, Ppm},
         lsps2::{
             cln::{tlv::TlvStream, HtlcAcceptedResult},
             model::PolicyOpeningFeeParams,
         },
+        proto::primitives::Ppm,
         util::wrap_payload_with_peer_id,
     };
     use chrono::{TimeZone, Utc};
diff --git a/plugins/lsps-plugin/src/lsps2/model.rs b/plugins/lsps-plugin/src/lsps2/model.rs
index bcf8de07..c9767dee 100644
--- a/plugins/lsps-plugin/src/lsps2/model.rs
+++ b/plugins/lsps-plugin/src/lsps2/model.rs
@@ -1,6 +1,6 @@
 use crate::{
     jsonrpc::{JsonRpcRequest, RpcError},
-    lsps0::primitives::{DateTime, Msat, Ppm, ShortChannelId},
+    proto::primitives::{DateTime, Msat, Ppm, ShortChannelId},
 };
 use bitcoin::hashes::{sha256, Hash, HashEngine, Hmac, HmacEngine};
 use chrono::Utc;
diff --git a/plugins/lsps-plugin/src/proto/mod.rs b/plugins/lsps-plugin/src/proto/mod.rs
new file mode 100644
index 00000000..23cd13c5
--- /dev/null
+++ b/plugins/lsps-plugin/src/proto/mod.rs
@@ -0,0 +1 @@
+pub mod primitives;
diff --git a/plugins/lsps-plugin/src/proto/primitives.rs b/plugins/lsps-plugin/src/proto/primitives.rs
new file mode 100644
index 00000000..3b2ff52d
--- /dev/null
+++ b/plugins/lsps-plugin/src/proto/primitives.rs
@@ -0,0 +1,199 @@
+use core::fmt;
+use serde::{
+    de::{self},
+    Deserialize, Deserializer, Serialize, Serializer,
+};
+
+const MSAT_PER_SAT: u64 = 1_000;
+
+/// Represents a monetary amount as defined in LSPS0.msat. Is converted to a
+/// `String` in json messages with a suffix `_msat` or `_sat` and internally
+/// represented as Millisatoshi `u64`.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Msat(pub u64);
+
+impl Msat {
+    /// Constructs a new `Msat` struct from a `u64` msat value.
+    pub fn from_msat(msat: u64) -> Self {
+        Msat(msat)
+    }
+
+    /// Construct a new `Msat` struct from a `u64` sat value.
+    pub fn from_sat(sat: u64) -> Self {
+        Msat(sat * MSAT_PER_SAT)
+    }
+
+    /// Returns the sat amount of the field. Is a floored integer division e.g
+    /// 100678 becomes 100.
+    pub fn to_sats_floor(&self) -> u64 {
+        self.0 / 1000
+    }
+
+    /// Returns the msat value as `u64`. Is the inner value of `Msat`.
+    pub fn msat(&self) -> u64 {
+        self.0
+    }
+}
+
+impl core::fmt::Display for Msat {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}_msat", self.0)
+    }
+}
+
+impl Serialize for Msat {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.0.to_string())
+    }
+}
+
+impl<'de> Deserialize<'de> for Msat {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        struct MsatVisitor;
+
+        impl<'de> de::Visitor<'de> for MsatVisitor {
+            type Value = Msat;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("a string representing a number")
+            }
+
+            fn visit_str<E>(self, value: &str) -> Result<Msat, E>
+            where
+                E: de::Error,
+            {
+                value
+                    .parse::<u64>()
+                    .map(Msat::from_msat)
+                    .map_err(|_| E::custom(format!("Invalid number string: {}", value)))
+            }
+
+            // Also handle if JSON mistakenly has a number instead of string
+            fn visit_u64<E>(self, value: u64) -> Result<Msat, E>
+            where
+                E: de::Error,
+            {
+                Ok(Msat::from_msat(value))
+            }
+
+            fn visit_i64<E>(self, value: i64) -> Result<Msat, E>
+            where
+                E: de::Error,
+            {
+                if value < 0 {
+                    Err(E::custom("Msat cannot be negative"))
+                } else {
+                    Ok(Msat::from_msat(value as u64))
+                }
+            }
+        }
+
+        deserializer.deserialize_any(MsatVisitor)
+    }
+}
+
+/// Represents parts-per-million as defined in LSPS0.ppm. Gets it's own type
+/// from the rationals: "This is its own type so that fractions can be expressed
+/// using this type, instead of as a floating-point type which might lose
+/// accuracy when serialized into text.". Having it as a separate type also
+/// provides more clarity.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+#[serde(transparent)] // Key attribute! Serialize/Deserialize as the inner u32
+pub struct Ppm(pub u32); // u32 is sufficient as 1,000,000 fits easily
+
+impl Ppm {
+    /// Constructs a new `Ppm` from a u32.
+    pub const fn from_ppm(value: u32) -> Self {
+        Ppm(value)
+    }
+
+    /// Applies the proportion to a base amount (e.g., in msats).
+    pub fn apply_to(&self, base_msat: u64) -> u64 {
+        // Careful about integer division order and potential overflow
+        (base_msat as u128 * self.0 as u128 / 1_000_000) as u64
+    }
+
+    /// Returns the ppm.
+    pub fn ppm(&self) -> u32 {
+        self.0
+    }
+}
+
+impl core::fmt::Display for Ppm {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "{}ppm", self.0)
+    }
+}
+
+/// Represents a short channel id as defined in LSPS0.scid. Matches with the
+/// implementation in cln_rpc.
+pub type ShortChannelId = cln_rpc::primitives::ShortChannelId;
+
+/// Represents a datetime as defined in LSPS0.datetime. Uses ISO8601 in UTC
+/// timezone.
+pub type DateTime = chrono::DateTime<chrono::Utc>;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json;
+
+    #[derive(Debug, Serialize, Deserialize)]
+    struct TestMessage {
+        amount: Msat,
+    }
+
+    /// Test serialization of a struct containing Msat.
+    #[test]
+    fn test_msat_serialization() {
+        let msg = TestMessage {
+            amount: Msat(12345000),
+        };
+
+        let expected_amount_json = r#""amount":"12345000""#;
+
+        // Assert that the field gets serialized as string.
+        let json_string = serde_json::to_string(&msg).expect("Serialization failed");
+        assert!(
+            json_string.contains(expected_amount_json),
+            "Serialized JSON should contain '{}'",
+            expected_amount_json
+        );
+
+        // Parse back to generic json value and check field.
+        let json_value: serde_json::Value =
+            serde_json::from_str(&json_string).expect("Failed to parse JSON back");
+        assert_eq!(
+            json_value
+                .get("amount")
+                .expect("JSON should have 'amount' field"),
+            &serde_json::Value::String("12345000".to_string()),
+            "JSON 'amount' field should have the correct string value"
+        );
+    }
+
+    /// Test deserialization into a struct containing Msat.
+    #[test]
+    fn test_msat_deserialization_and_errors() {
+        // Case 1: Input string uses "_msat" suffix
+        let json_ok = r#"{"amount":"987654321"}"#;
+        let expected_value_msat = Msat(987654321);
+        let message1: TestMessage =
+            serde_json::from_str(json_ok).expect("Deserialization from string failed");
+        assert_eq!(message1.amount, expected_value_msat);
+
+        // Case 2: Non-numeric Value before suffix
+        let json_non_numeric = r#"{"amount":"abc"}"#;
+        let result_non_numeric = serde_json::from_str::<TestMessage>(json_non_numeric);
+        assert!(
+            result_non_numeric.is_err(),
+            "Deserialization should fail for non-numeric value"
+        );
+    }
+}